New engine releases 2020

[Gabor Szots]

OliThink seems to have been revived, now it is at version 5.4.0: http://brausch.org/home/chess/

[Damir]

Igel 2.5.0 at https://github.com/vshcherbyna/igel/releases/tag/2.5.0 (binaries for Linux, macOS and Windows).

This release brings various improvements in code quality as well as strength improvements in search, evaluation and tt management. As of this release Igel uses OpenBench as a primary testing system and I would like to specially thank Andrew Grant for supporting Igel development on OpenBench.

What's new:

- Implement OpenBench support
- Implement BMI2 instruction support for faster search
- Implement prefetch instruction support for faster search
- Implement ponder support
- Implement improved sudden death time control management
- Implement use of hugepages in Linux OS
- Implement more efficient tt management and re-write tt replacement scheme to 'always replace'
- Implement proper handling of chopper moves
- Implement improved king safety evaluation
- Implement improved weights management
- Implement symmetric evaluation function
- Set tt score in qsearch
- Set bestmove as a hashmove by default
- Bugfix for knight outpost
- Bugfix for depth skipping in smp mode
- Implement pst based evaluation for connected passers
- Bugfix for probcut in check
- Factor in 'improving' even when in checks
- Adjust bestscore from tt score
- Bugfix shuffling of moves at root in smp mode

In case of bug reports, questions, discussions please ask them at main Igel topic at http://talkchess.com/forum3/viewtopic.p ... 06#p847306 to prevent polluting this thread.

Many thanks for new Igel Volodymyr.

[Gabor Szots]

New UCI engine FracTal by Visan Alexandru, Romania. Open source, strength around 1900 on lichess.

https://github.com/visanalexandru/FracTal-ChessEngine

[Gabor Szots]

Ceibo is back with version 0.5: https://sites.google.com/site/ceibochess/downloads

[Kieren Pearson]

Hi all, I've released Halogen 4 today https://github.com/KierenP/Halogen

Should be about ~2200 CCRL and another 70-100 elo higher in 4CPU mode.

[Gabor Szots]

Hi all, I've released Halogen 4 today https://github.com/KierenP/Halogen

Should be about ~2200 CCRL and another 70-100 elo higher in 4CPU mode.

Good news and good progress as well. Thanks Kieren.

[Daniel Anulliero]

Hello
New release of Isa , as it seems the best one at CCRL but not realeased yet : Isa 2.0.83
+14 elo ccrl 40/15 , so not even need champagne lol

Download link below

All the best
Dany

[carldaman]

Thanks, Daniel, but google drive requires log-in credentials.

[Gabor Szots]

google drive requires log-in credentials.

Not for me.

[Daniel Anulliero]

google drive requires log-in credentials.

Not for me.

Forgot to activate the "sharing link" .
Now it must works for everybody
Sorry